EmptySvgException when write docs over two lines

I encountered a strange issue. I tried to find a workaround, but I give up… Please help!

Environment

I’m using this plugin on WebStorm 2021.2/MacBook Air(M1, 2020). Graphviz is installed using homebrew.

The error

I wrote a small test doc but I got an error like this.

@startuml
interface List
interface Collection
@enduml

Fixed case

The error is fixed when commenting out a line.

@startuml
interface List
- interface Collection
@enduml

Try custom PlantUML jar but failed

I installed PlantUML via homebrew, and I changed the plugin configuration to use a custom jar but got the same result.

Try using the custom jar from CLI, it works

However, I use the same jar from CLI, it works…

java -jar /opt/homebrew/Cellar/plantuml/1.2021.9/libexec/plantuml.jar -Djava.awt.headless=true FILENAME

Is there any other way to fix it?

[mactkg]

I notice that installing graphviz / plantuml was failed somehow. The plugin works correctly after reinstalling xcode command line tools by sudo rm -rf /Library/Developer/CommandLineTools && xcode-install --install and graphviz and plantuml by brew reinstall plantuml, graphviz.

The issue is fixed. Thanks.

[krasa]

It seems that your graphviz does not work correctly, perhaps try a different version